Assembly Diffs

linux arm

Diffs are based on 2,224,699 contexts (831,156 MinOpts, 1,393,543 FullOpts).

MISSED contexts: 73,372 (3.19%)

Overall (+2 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 237,803,444 +2

FullOpts (+2 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 116,399,952 +2

Example diffs

libraries_tests.run.linux.arm.Release.mch

+2 (+0.36%) : 644106.dasm - System.Convert:TryDecodeFromUtf16(System.ReadOnlySpan1[ushort],System.Span1[ubyte],byref,byref):ubyte (Tier1) 

@@ -81,7 +81,7 @@ G_M25359_IG02:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byre
             movs    r2, 0
             str     r2, [sp+0x08]  // [V09 loc5]
             cmp     r6, 0
-            beq     G_M25359_IG13
+            beq     G_M25359_IG12
             movw    lr, 0xd1ff
             movt    lr, 0xd1ff
             str     lr, [sp]   // [V10 loc6]
@@ -90,27 +90,16 @@ G_M25359_IG02:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byre
             movs    r1, 3
             mul     r0, r0, r1
             cmp     r7, r0
-            blt     SHORT G_M25359_IG04
-                       ;; size=68 bbWeight=1 PerfScore 23.00
-G_M25359_IG03:        ; bbWeight=0.83, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, gcvars, byref, isz
+            blt     G_M25359_IG25
+                       ;; size=70 bbWeight=1 PerfScore 23.00
+G_M25359_IG03:        ; bbWeight=0.83, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, gcvars, byref
             sub     r12, r10, 4
-            b       SHORT G_M25359_IG05
-                       ;; size=6 bbWeight=0.83 PerfScore 1.67
-G_M25359_IG04:        ; bbWeight=0.17, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref
-            mov     r0, r7
-            movs    r1, 3
-            movw    r12, 0xd1ff
-            movt    r12, 0xd1ff
-            blx     r12        // CORINFO_HELP_DIV
-            ; gcr arg pop 0
-            lsl     r12, r0, 2
-            ldr     r7, [sp+0x10]  // [V07 loc3]
-                       ;; size=20 bbWeight=0.17 PerfScore 1.17
-G_M25359_IG05:        ; bbWeight=0.17, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
+                      ;; size=4 bbWeight=0.83 PerfScore 0.83
+G_M25359_IG04:        ; bbWeight=0.17, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
             cmp     r12, 0
-            ble     G_M25359_IG21
+            ble     G_M25359_IG20
                         ;; size=8 bbWeight=0.17 PerfScore 0.33
-G_M25359_IG06:        ; bbWeight=20.67, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
+G_M25359_IG05:        ; bbWeight=20.67, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
             ldr     r3, [sp+0x0C] // [V08 loc4]
             lsls    r0, r3, 1
             add     r0, r8
@@ -140,11 +129,11 @@ G_M25359_IG06:        ; bbWeight=20.67, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8
             lsls    r1, r1, 6
             orrs    r1, r0
                        ;; size=72 bbWeight=20.67 PerfScore 516.67
-G_M25359_IG07:        ; bbWeight=20.67, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
+G_M25359_IG06:        ; bbWeight=20.67, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
             cmp     r1, 0
-            blt     SHORT G_M25359_IG22
+            blt     SHORT G_M25359_IG21
                      ;; size=4 bbWeight=20.67 PerfScore 41.33
-G_M25359_IG08:        ; bbWeight=21.67, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
+G_M25359_IG07:        ; bbWeight=21.67, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
             ldr     r2, [sp+0x08] // [V09 loc5]
             add     r0, r9, r2
             ; byrRegs +[r0]
@@ -156,16 +145,16 @@ G_M25359_IG08:        ; bbWeight=21.67, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8
             adds    r2, r2, 3
             adds    r3, r3, 4
             cmp     r3, r12
-            blt     SHORT G_M25359_IG20
+            blt     SHORT G_M25359_IG19
                       ;; size=24 bbWeight=21.67 PerfScore 238.33
-G_M25359_IG09:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
+G_M25359_IG08:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, byref, isz
             ; byrRegs -[r0]
             ldr     r10, [sp+0x14] // [V06 loc2]
             sub     r0, r10, 4
             cmp     r12, r0
-            bne     SHORT G_M25359_IG19
+            bne     SHORT G_M25359_IG18
             cmp     r3, r10
-            beq     SHORT G_M25359_IG18
+            beq     SHORT G_M25359_IG17
             lsl     r0, r10, 1
             sub     r1, r0, 8
             ldrh    r5, [r8+r1]
@@ -182,7 +171,7 @@ G_M25359_IG09:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9
             mvn     r7, 255
             ands    r6, r7
             cmp     r6, 0
-            bne     SHORT G_M25359_IG17
+            bne     SHORT G_M25359_IG16
             ldrsb   r5, [lr+r5]
             lsls    r5, r5, 18
             ldrsb   r1, [lr+r1]
@@ -191,7 +180,7 @@ G_M25359_IG09:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9
             cmp     r0, 61
             beq     SHORT G_M25359_IG26
                        ;; size=86 bbWeight=1 PerfScore 29.00
-G_M25359_IG10:        ; bbWeight=0.83, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9 lr}, byref, isz
+G_M25359_IG09:        ; bbWeight=0.83, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9 lr}, byref, isz
             ldrsb   r0, [lr+r0]
             orrs    r0, r5
             ldrsb   r12, [lr+r12]
@@ -199,11 +188,11 @@ G_M25359_IG10:        ; bbWeight=0.83, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9
             ; byrRegs -[lr]
             orr     r5, r0, lr
             cmp     r5, 0
-            blt     SHORT G_M25359_IG16
+            blt     SHORT G_M25359_IG15
             ldr     r7, [sp+0x10]   // [V07 loc3]
             subs    r0, r7, 3
             cmp     r2, r0
-            bgt     SHORT G_M25359_IG15
+            bgt     SHORT G_M25359_IG14
             add     r0, r9, r2
             ; byrRegs +[r0]
             asrs    r1, r5, 16
@@ -213,19 +202,19 @@ G_M25359_IG10:        ; bbWeight=0.83, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9
             strb    r5, [r0+0x02]
             adds    r2, r2, 3
                        ;; size=46 bbWeight=0.83 PerfScore 15.00
-G_M25359_IG11:        ; bbWeight=1, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
+G_M25359_IG10:        ; bbWeight=1, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
             ; byrRegs -[r0 r9]
             ; GC ptr vars -{V10}
             adds    r3, r3, 4
             ldr     r6, [sp+0x04]  // [V41 tmp24]
             cmp     r10, r6
             str     r2, [sp+0x08]  // [V09 loc5]
-            bne     SHORT G_M25359_IG22
+            bne     SHORT G_M25359_IG21
                      ;; size=10 bbWeight=1 PerfScore 5.00
-G_M25359_IG12:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref
+G_M25359_IG11:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref
             str     r3, [sp+0x0C]   // [V08 loc4]
                        ;; size=2 bbWeight=0.50 PerfScore 0.50
-G_M25359_IG13:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref
+G_M25359_IG12:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref
             ldr     r3, [sp+0x0C]   // [V08 loc4]
             str     r3, [r4]
             ldr     r5, [sp+0x54]  // [V03 arg3]
@@ -234,49 +223,49 @@ G_M25359_IG13:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byre
             str     r2, [r5]
             movs    r0, 1
                        ;; size=12 bbWeight=1 PerfScore 6.00
-G_M25359_IG14:        ; bbWeight=1, epilog, nogc, extend
+G_M25359_IG13:        ; bbWeight=1, epilog, nogc, extend
             add     sp, 28
             pop     {r4,r5,r6,r7,r8,r9,r10,r11,lr}
             add     sp, 16
             bx      lr
                        ;; size=10 bbWeight=1 PerfScore 4.00
-G_M25359_IG15:        ; bbWeight=0.42, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
+G_M25359_IG14:        ; bbWeight=0.42, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
             ; byrRegs -[r5]
             str     r2, [sp+0x08]  // [V09 loc5]
-            b       SHORT G_M25359_IG22
+            b       SHORT G_M25359_IG21
                      ;; size=4 bbWeight=0.42 PerfScore 0.83
-G_M25359_IG16:        ; bbWeight=0.42, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
+G_M25359_IG15:        ; bbWeight=0.42, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
             str     r2, [sp+0x08]   // [V09 loc5]
-            b       SHORT G_M25359_IG22
+            b       SHORT G_M25359_IG21
                      ;; size=4 bbWeight=0.42 PerfScore 0.83
+G_M25359_IG16:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
+            str     r2, [sp+0x08]  // [V09 loc5]
+            b       SHORT G_M25359_IG21
+                       ;; size=4 bbWeight=0.50 PerfScore 1.00
 G_M25359_IG17:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
             str     r2, [sp+0x08]  // [V09 loc5]
-            b       SHORT G_M25359_IG22
+            b       SHORT G_M25359_IG21
                      ;; size=4 bbWeight=0.50 PerfScore 1.00
 G_M25359_IG18:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
             str     r2, [sp+0x08]  // [V09 loc5]
-            b       SHORT G_M25359_IG22
+            b       SHORT G_M25359_IG21
                      ;; size=4 bbWeight=0.50 PerfScore 1.00
-G_M25359_IG19:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, byref, isz
-            str     r2, [sp+0x08]  // [V09 loc5]
-            b       SHORT G_M25359_IG22
-                       ;; size=4 bbWeight=0.50 PerfScore 1.00
-G_M25359_IG20:        ; bbWeight=10.83, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, gcvars, byref, isz
+G_M25359_IG19:        ; bbWeight=10.83, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=4310 {r4 r8 r9 lr}, gcvars, byref, isz
             ; byrRegs +[r8-r9 lr]
             ; GC ptr vars +{V05 V10}
             str     r3, [sp+0x0C]  // [V08 loc4]
             str     r2, [sp+0x08]  // [V09 loc5]
-            b       SHORT G_M25359_IG06
+            b       SHORT G_M25359_IG05
                      ;; size=6 bbWeight=10.83 PerfScore 32.50
-G_M25359_IG21:        ; bbWeight=0.08, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
+G_M25359_IG20:        ; bbWeight=0.08, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, byref, isz
             ; byrRegs -[lr]
             ldr     r2, [sp+0x08]  // [V09 loc5]
             ldr     r3, [sp+0x0C]  // [V08 loc4]
             ldr     lr, [sp]   // [V10 loc6]
             ; byrRegs +[lr]
-            b       SHORT G_M25359_IG09
+            b       SHORT G_M25359_IG08
                       ;; size=10 bbWeight=0.08 PerfScore 0.33
-G_M25359_IG22:        ; bbWeight=5.94, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
+G_M25359_IG21:        ; bbWeight=5.94, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefRegs=0010 {r4}, gcvars, byref, isz
             ; byrRegs -[r8-r9 lr]
             ; GC ptr vars -{V05 V10}
             str     r3, [r4]
@@ -287,15 +276,15 @@ G_M25359_IG22:        ; bbWeight=5.94, gcVars=00000000 {}, gcrefRegs=0000 {}, by
             ldr     r0, [r4]
             ands    r0, r0, 3
             cmp     r0, 0
-            beq     SHORT G_M25359_IG23
+            beq     SHORT G_M25359_IG22
             movs    r0, 0
-            b       SHORT G_M25359_IG24
+            b       SHORT G_M25359_IG23
                      ;; size=22 bbWeight=5.94 PerfScore 59.39
-G_M25359_IG23:        ; bbWeight=5.94, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
+G_M25359_IG22:        ; bbWeight=5.94, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
             ; byrRegs -[r4-r5]
             movs    r0, 1
                        ;; size=2 bbWeight=5.94 PerfScore 5.94
-G_M25359_IG24:        ; bbWeight=5.94, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
+G_M25359_IG23:        ; bbWeight=5.94, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
             movw    r3, 0xd1ff
             movt    r3, 0xd1ff
             ldr     r3, [r3]
@@ -303,15 +292,27 @@ G_M25359_IG24:        ; bbWeight=5.94, gcrefRegs=0000 {}, byrefRegs=0000 {}, byr
             ; gcr arg pop 0
             movs    r0, 0
                        ;; size=14 bbWeight=5.94 PerfScore 29.69
-G_M25359_IG25:        ; bbWeight=5.94, epilog, nogc, extend
+G_M25359_IG24:        ; bbWeight=5.94, epilog, nogc, extend
             add     sp, 28
             pop     {r4,r5,r6,r7,r8,r9,r10,r11,lr}
             add     sp, 16
             bx      lr
                        ;; size=10 bbWeight=5.94 PerfScore 23.75
-G_M25359_IG26:        ; bbWeight=0.17, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9 lr}, gcvars, byref, isz
-            ; byrRegs +[r4 r9 lr]
+G_M25359_IG25:        ; bbWeight=0.17, gcVars=00000020 {V10}, gcrefRegs=0000 {}, byrefRegs=0310 {r4 r8 r9}, gcvars, byref, isz
+            ; byrRegs +[r4 r8-r9]
             ; GC ptr vars +{V05 V10}
+            mov     r0, r7
+            movs    r1, 3
+            movw    r12, 0xd1ff
+            movt    r12, 0xd1ff
+            blx     r12        // CORINFO_HELP_DIV
+            ; gcr arg pop 0
+            lsl     r12, r0, 2
+            ldr     r7, [sp+0x10]  // [V07 loc3]
+            b       SHORT G_M25359_IG04
+                       ;; size=22 bbWeight=0.17 PerfScore 1.33
+G_M25359_IG26:        ; bbWeight=0.17, gcrefRegs=0000 {}, byrefRegs=4210 {r4 r9 lr}, byref, isz
+            ; byrRegs -[r8] +[lr]
...

Details

Improvements/regressions per collection

Collection Contexts with diffs Improvements Regressions Same size Improvements (bytes) Regressions (bytes)
benchmarks.run.linux.arm.checked.mch 0 0 0 0 -0 +0
benchmarks.run_pgo.linux.arm.checked.mch 0 0 0 0 -0 +0
benchmarks.run_tiered.linux.arm.checked.mch 0 0 0 0 -0 +0
coreclr_tests.run.linux.arm.checked.mch 0 0 0 0 -0 +0
libraries.crossgen2.linux.arm.checked.mch 0 0 0 0 -0 +0
libraries.pmi.linux.arm.checked.mch 0 0 0 0 -0 +0
libraries_tests.run.linux.arm.Release.mch 1 0 1 0 -0 +2
librariestestsnotieredcompilation.run.linux.arm.Release.mch 0 0 0 0 -0 +0
realworld.run.linux.arm.checked.mch 0 0 0 0 -0 +0
1 0 1 0 -0 +2

Context information

Collection Diffed contexts MinOpts FullOpts Missed, base Missed, diff
benchmarks.run.linux.arm.checked.mch 49,877 6,439 43,438 1,255 (2.45%) 1,255 (2.45%)
benchmarks.run_pgo.linux.arm.checked.mch 164,182 59,122 105,060 3,267 (1.95%) 3,267 (1.95%)
benchmarks.run_tiered.linux.arm.checked.mch 79,715 43,305 36,410 1,110 (1.37%) 1,110 (1.37%)
coreclr_tests.run.linux.arm.checked.mch 472,651 259,513 213,138 7,200 (1.50%) 7,200 (1.50%)
libraries.crossgen2.linux.arm.checked.mch 169,558 14 169,544 0 (0.00%) 0 (0.00%)
libraries.pmi.linux.arm.checked.mch 274,272 6 274,266 7,834 (2.78%) 7,834 (2.78%)
libraries_tests.run.linux.arm.Release.mch 703,270 440,967 262,303 17,668 (2.45%) 17,668 (2.45%)
librariestestsnotieredcompilation.run.linux.arm.Release.mch 274,696 21,625 253,071 33,619 (10.90%) 33,619 (10.90%)
realworld.run.linux.arm.checked.mch 36,478 165 36,313 1,419 (3.74%) 1,419 (3.74%)
2,224,699 831,156 1,393,543 73,372 (3.19%) 73,372 (3.19%)

jit-analyze output

libraries_tests.run.linux.arm.Release.mch

To reproduce these diffs on Windows x86: superpmi.py asmdiffs -target_os linux -target_arch arm -arch x86 


Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 237803444 (overridden on cmd)
Total bytes of diff: 237803446 (overridden on cmd)
Total bytes of delta: 2 (0.00 % of base)
    diff is a regression.
    relative diff is a regression.

Detail diffs



Top file regressions (bytes):
           2 : 644106.dasm (0.36 % of base)

1 total files with Code Size differences (0 improved, 1 regressed), 0 unchanged.

Top method regressions (bytes):
           2 (0.36 % of base) : 644106.dasm - System.Convert:TryDecodeFromUtf16(System.ReadOnlySpan`1[ushort],System.Span`1[ubyte],byref,byref):ubyte (Tier1)

Top method regressions (percentages):
           2 (0.36 % of base) : 644106.dasm - System.Convert:TryDecodeFromUtf16(System.ReadOnlySpan`1[ushort],System.Span`1[ubyte],byref,byref):ubyte (Tier1)

1 total methods with Code Size differences (0 improved, 1 regressed).