Assembly Diffs

linux arm

Diffs are based on 2,239,390 contexts (829,328 MinOpts, 1,410,062 FullOpts).

MISSED contexts: 71,274 (3.08%)

Overall (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 243,880,786 +0

FullOpts (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 122,911,654 +0

Example diffs

libraries_tests.run.linux.arm.Release.mch

+0 (0.00%) : 456386.dasm - System.__DTString:SkipWhiteSpaces():this (Tier1) 

@@ -60,7 +60,7 @@ G_M9890_IG03:        ; bbWeight=1, gcrefRegs=0000 {}, byrefRegs=0030 {r4 r5}, by
             ; byrRegs +[r3]
             ldr     r2, [r3+0x04]
             cmp     r0, r2
-            bhs     SHORT G_M9890_IG11
+            bhs     SHORT G_M9890_IG10
             ldr     r3, [r3]
             lsls    r0, r0, 1
             ldrh    r6, [r3+r0]
@@ -114,20 +114,18 @@ G_M9890_IG09:        ; bbWeight=1, gcVars=00000000 {}, gcrefRegs=0000 {}, byrefR
             adds    r3, r3, 1
             ldr     r2, [r4+0x10]
             cmp     r3, r2
-            blt     SHORT G_M9890_IG03
-                       ;; size=16 bbWeight=1 PerfScore 8.00
-G_M9890_IG10:        ; bbWeight=0.50, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz
+            bge     SHORT G_M9890_IG08
+            b       SHORT G_M9890_IG03
+                       ;; size=18 bbWeight=1 PerfScore 9.00
+G_M9890_IG10:        ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
             ; byrRegs -[r4-r5]
-            b       SHORT G_M9890_IG08
-                       ;; size=2 bbWeight=0.50 PerfScore 0.50
-G_M9890_IG11:        ; bbWeight=0, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref
             movw    r3, 0xd1ff
             movt    r3, 0xd1ff
             blx     r3     // CORINFO_HELP_RNGCHKFAIL
             bkpt    
                        ;; size=12 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 144, prolog size 8, PerfScore 52.00, instruction count 57, allocated bytes for code 144 (MethodHash=4fd7d95d) for method System.__DTString:SkipWhiteSpaces():this (Tier1)
+; Total bytes of code 144, prolog size 8, PerfScore 52.50, instruction count 57, allocated bytes for code 144 (MethodHash=4fd7d95d) for method System.__DTString:SkipWhiteSpaces():this (Tier1)
 ; ============================================================
 
 Unwind Info:

+0 (0.00%) : 306823.dasm - System.Globalization.CompareInfo:StartsWithOrdinalHelper(System.ReadOnlySpan1[ushort],System.ReadOnlySpan1[ushort],int,uint):ubyte:this (Tier1) 

@@ -95,7 +95,7 @@ G_M3596_IG04:        ; bbWeight=1, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, byref
             ; gcr arg pop 0
             ldrb    r0, [r4+0x18]
             cmp     r0, 0
-            beq     G_M3596_IG32
+            beq     G_M3596_IG31
             ands    r0, r5, 4
             cmp     r0, 0
             beq     SHORT G_M3596_IG05
@@ -273,19 +273,15 @@ G_M3596_IG30:        ; bbWeight=0.01, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, by
             movt    r2, 0xd1ff
             ldrb    r2, [r2+r8]
             cmp     r2, 0
-            bne     SHORT G_M3596_IG19
-                       ;; size=16 bbWeight=0.01 PerfScore 0.04
-G_M3596_IG31:        ; bbWeight=0.00, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz
-            ; gcrRegs -[r4]
-            b       SHORT G_M3596_IG24
-                       ;; size=2 bbWeight=0.00 PerfScore 0.00
-G_M3596_IG32:        ; bbWeight=0, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, byref, isz
-            ; gcrRegs +[r4]
+            beq     SHORT G_M3596_IG24
+            b       SHORT G_M3596_IG19
+                       ;; size=18 bbWeight=0.01 PerfScore 0.04
+G_M3596_IG31:        ; bbWeight=0, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, byref, isz
             movs    r0, 0
             b       SHORT G_M3596_IG06
                        ;; size=4 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 372, prolog size 22, PerfScore 10265.49, instruction count 144, allocated bytes for code 372 (MethodHash=795ef1f3) for method System.Globalization.CompareInfo:StartsWithOrdinalHelper(System.ReadOnlySpan`1[ushort],System.ReadOnlySpan`1[ushort],int,uint):ubyte:this (Tier1)
+; Total bytes of code 372, prolog size 22, PerfScore 10265.50, instruction count 144, allocated bytes for code 372 (MethodHash=795ef1f3) for method System.Globalization.CompareInfo:StartsWithOrdinalHelper(System.ReadOnlySpan`1[ushort],System.ReadOnlySpan`1[ushort],int,uint):ubyte:this (Tier1)
 ; ============================================================
 
 Unwind Info:

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 2 0 0 2 -0 +0
librariestestsnotieredcompilation.run.linux.arm.Release.mch 0 0 0 0 -0 +0
realworld.run.linux.arm.checked.mch 0 0 0 0 -0 +0
2 0 0 2 -0 +0

Context information

Collection Diffed contexts MinOpts FullOpts Missed, base Missed, diff
benchmarks.run.linux.arm.checked.mch 45,964 5,344 40,620 1,203 (2.55%) 1,203 (2.55%)
benchmarks.run_pgo.linux.arm.checked.mch 159,513 56,729 102,784 3,201 (1.97%) 3,201 (1.97%)
benchmarks.run_tiered.linux.arm.checked.mch 80,099 43,607 36,492 1,086 (1.34%) 1,086 (1.34%)
coreclr_tests.run.linux.arm.checked.mch 471,992 259,195 212,797 7,171 (1.50%) 7,171 (1.50%)
libraries.crossgen2.linux.arm.checked.mch 188,191 14 188,177 0 (0.00%) 0 (0.00%)
libraries.pmi.linux.arm.checked.mch 272,360 6 272,354 7,786 (2.78%) 7,786 (2.78%)
libraries_tests.run.linux.arm.Release.mch 710,231 442,672 267,559 16,195 (2.23%) 16,195 (2.23%)
librariestestsnotieredcompilation.run.linux.arm.Release.mch 274,633 21,604 253,029 33,224 (10.79%) 33,224 (10.79%)
realworld.run.linux.arm.checked.mch 36,407 157 36,250 1,408 (3.72%) 1,408 (3.72%)
2,239,390 829,328 1,410,062 71,274 (3.08%) 71,274 (3.08%)

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: 243880786 (overridden on cmd)
Total bytes of diff: 243880786 (overridden on cmd)
Total bytes of delta: 0 (0.00 % of base)

Detail diffs



0 total files with Code Size differences (0 improved, 0 regressed), 2 unchanged.

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

windows x86

Diffs are based on 2,293,451 contexts (839,658 MinOpts, 1,453,793 FullOpts).

MISSED contexts: 45 (0.00%)

Overall (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.windows.x86.Release.mch 186,683,551 +0

FullOpts (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.windows.x86.Release.mch 88,409,851 +0

Example diffs

libraries_tests.run.windows.x86.Release.mch

+0 (0.00%) : 394483.dasm - System.__DTString:SkipWhiteSpaces():this (Tier1) 

@@ -56,7 +56,7 @@ G_M9890_IG03:        ; bbWeight=1, gcrefRegs=00000000 {}, byrefRegs=00000040 {es
        lea      eax, bword ptr [esi+0x0C]
        ; byrRegs +[eax]
        cmp      ecx, dword ptr [eax+0x04]
-       jae      SHORT G_M9890_IG09
+       jae      SHORT G_M9890_IG08
        mov      eax, bword ptr [eax]
        movzx    edi, word  ptr [eax+2*ecx]
        cmp      edi, 256
@@ -93,17 +93,15 @@ G_M9890_IG07:        ; bbWeight=1, gcVars=00000000 {}, gcrefRegs=00000000 {}, by
        mov      eax, dword ptr [esi+0x04]
        inc      eax
        cmp      eax, dword ptr [esi+0x10]
-       jl       SHORT G_M9890_IG03
-                       ;; size=12 bbWeight=1 PerfScore 9.25
-G_M9890_IG08:        ; bbWeight=0.50, gcrefRegs=00000000 {}, byrefRegs=00000000 {}, byref, isz
+       jge      SHORT G_M9890_IG06
+       jmp      SHORT G_M9890_IG03
+                       ;; size=14 bbWeight=1 PerfScore 11.25
+G_M9890_IG08:        ; bbWeight=0, gcrefRegs=00000000 {}, byrefRegs=00000000 {}, byref
        ; byrRegs -[esi]
-       jmp      SHORT G_M9890_IG06
-                       ;; size=2 bbWeight=0.50 PerfScore 1.00
-G_M9890_IG09:        ; bbWeight=0, gcrefRegs=00000000 {}, byrefRegs=00000000 {}, byref
        call     CORINFO_HELP_RNGCHKFAIL
        int3     
                        ;; size=6 bbWeight=0 PerfScore 0.00
 
-; Total bytes of code 106, prolog size 5, PerfScore 48.50, instruction count 41, allocated bytes for code 106 (MethodHash=4fd7d95d) for method System.__DTString:SkipWhiteSpaces():this (Tier1)
+; Total bytes of code 106, prolog size 5, PerfScore 49.50, instruction count 41, allocated bytes for code 106 (MethodHash=4fd7d95d) for method System.__DTString:SkipWhiteSpaces():this (Tier1)
 ; ============================================================

Details

Improvements/regressions per collection

Collection Contexts with diffs Improvements Regressions Same size Improvements (bytes) Regressions (bytes)
benchmarks.run.windows.x86.checked.mch 0 0 0 0 -0 +0
benchmarks.run_pgo.windows.x86.checked.mch 0 0 0 0 -0 +0
benchmarks.run_tiered.windows.x86.checked.mch 0 0 0 0 -0 +0
coreclr_tests.run.windows.x86.checked.mch 0 0 0 0 -0 +0
libraries.crossgen2.windows.x86.checked.mch 0 0 0 0 -0 +0
libraries.pmi.windows.x86.checked.mch 0 0 0 0 -0 +0
libraries_tests.run.windows.x86.Release.mch 1 0 0 1 -0 +0
librariestestsnotieredcompilation.run.windows.x86.Release.mch 0 0 0 0 -0 +0
realworld.run.windows.x86.checked.mch 0 0 0 0 -0 +0
1 0 0 1 -0 +0

Context information

Collection Diffed contexts MinOpts FullOpts Missed, base Missed, diff
benchmarks.run.windows.x86.checked.mch 24,492 4 24,488 1 (0.00%) 1 (0.00%)
benchmarks.run_pgo.windows.x86.checked.mch 117,805 41,904 75,901 2 (0.00%) 2 (0.00%)
benchmarks.run_tiered.windows.x86.checked.mch 47,882 28,747 19,135 1 (0.00%) 1 (0.00%)
coreclr_tests.run.windows.x86.checked.mch 574,647 319,847 254,800 21 (0.00%) 21 (0.00%)
libraries.crossgen2.windows.x86.checked.mch 242,615 15 242,600 4 (0.00%) 4 (0.00%)
libraries.pmi.windows.x86.checked.mch 305,766 6 305,760 7 (0.00%) 7 (0.00%)
libraries_tests.run.windows.x86.Release.mch 627,828 427,222 200,606 5 (0.00%) 5 (0.00%)
librariestestsnotieredcompilation.run.windows.x86.Release.mch 316,432 21,910 294,522 3 (0.00%) 3 (0.00%)
realworld.run.windows.x86.checked.mch 35,984 3 35,981 1 (0.00%) 1 (0.00%)
2,293,451 839,658 1,453,793 45 (0.00%) 45 (0.00%)

jit-analyze output

libraries_tests.run.windows.x86.Release.mch

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


Summary of Code Size diffs:
(Lower is better)

Total bytes of base: 186683551 (overridden on cmd)
Total bytes of diff: 186683551 (overridden on cmd)
Total bytes of delta: 0 (0.00 % of base)

Detail diffs



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

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