Assembly Diffs

linux arm

Diffs are based on 2,053,507 contexts (830,101 MinOpts, 1,223,406 FullOpts).

MISSED contexts: 71,368 (3.36%)

Overall (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 244,097,424 +0

FullOpts (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.linux.arm.Release.mch 122,244,916 +0

Example diffs

libraries_tests.run.linux.arm.Release.mch

+0 (0.00%) : 455766.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%) : 306631.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_IG33
+            beq     G_M3596_IG32
             ands    r0, r5, 4
             cmp     r0, 0
             beq     SHORT G_M3596_IG05
@@ -274,14 +274,10 @@ G_M3596_IG31:        ; bbWeight=0.01, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, by
             movt    r2, 0xd1ff
             ldrb    r2, [r2+r8]
             cmp     r2, 0
-            bne     SHORT G_M3596_IG20
-                       ;; size=16 bbWeight=0.01 PerfScore 0.04
-G_M3596_IG32:        ; bbWeight=0.00, gcrefRegs=0000 {}, byrefRegs=0000 {}, byref, isz
-            ; gcrRegs -[r4]
-            b       SHORT G_M3596_IG25
-                       ;; size=2 bbWeight=0.00 PerfScore 0.00
-G_M3596_IG33:        ; bbWeight=0, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, byref, isz
-            ; gcrRegs +[r4]
+            beq     SHORT G_M3596_IG25
+            b       SHORT G_M3596_IG20
+                       ;; size=18 bbWeight=0.01 PerfScore 0.04
+G_M3596_IG32:        ; bbWeight=0, gcrefRegs=0010 {r4}, byrefRegs=0000 {}, byref, isz
             movs    r0, 0
             b       SHORT G_M3596_IG06
                        ;; size=4 bbWeight=0 PerfScore 0.00

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 44,927 4,966 39,961 1,181 (2.56%) 1,181 (2.56%)
benchmarks.run_pgo.linux.arm.checked.mch 167,320 62,159 105,161 3,336 (1.95%) 3,336 (1.95%)
benchmarks.run_tiered.linux.arm.checked.mch 73,073 38,812 34,261 951 (1.28%) 951 (1.28%)
coreclr_tests.run.linux.arm.checked.mch 472,401 259,200 213,201 7,170 (1.50%) 7,170 (1.50%)
libraries.crossgen2.linux.arm.checked.mch 1,774 0 1,774 0 (0.00%) 0 (0.00%)
libraries.pmi.linux.arm.checked.mch 272,309 6 272,303 7,786 (2.78%) 7,786 (2.78%)
libraries_tests.run.linux.arm.Release.mch 710,650 443,197 267,453 16,293 (2.24%) 16,293 (2.24%)
librariestestsnotieredcompilation.run.linux.arm.Release.mch 274,642 21,604 253,038 33,244 (10.80%) 33,244 (10.80%)
realworld.run.linux.arm.checked.mch 36,411 157 36,254 1,407 (3.72%) 1,407 (3.72%)
2,053,507 830,101 1,223,406 71,368 (3.36%) 71,368 (3.36%)

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: 244097424 (overridden on cmd)
Total bytes of diff: 244097424 (overridden on cmd)
Total bytes of delta: 0 (0.00 % of base)
    relative diff is a regression.

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 2,290,755 contexts (838,165 MinOpts, 1,452,590 FullOpts).

MISSED contexts: 808 (0.04%)

Overall (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.windows.x86.Release.mch 184,751,928 +0

FullOpts (+0 bytes)

Collection Base size (bytes) Diff size (bytes)
libraries_tests.run.windows.x86.Release.mch 87,451,888 +0

Example diffs

libraries_tests.run.windows.x86.Release.mch

+0 (0.00%) : 395581.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 24,487 4 24,483 3 (0.01%) 3 (0.01%)
benchmarks.run_pgo.windows.x86.checked.mch 118,208 42,036 76,172 35 (0.03%) 35 (0.03%)
benchmarks.run_tiered.windows.x86.checked.mch 48,026 28,739 19,287 3 (0.01%) 3 (0.01%)
coreclr_tests.run.windows.x86.checked.mch 574,599 319,944 254,655 76 (0.01%) 76 (0.01%)
libraries.crossgen2.windows.x86.checked.mch 242,541 15 242,526 47 (0.02%) 47 (0.02%)
libraries.pmi.windows.x86.checked.mch 305,646 6 305,640 72 (0.02%) 72 (0.02%)
libraries_tests.run.windows.x86.Release.mch 624,877 425,508 199,369 481 (0.08%) 481 (0.08%)
librariestestsnotieredcompilation.run.windows.x86.Release.mch 316,408 21,910 294,498 64 (0.02%) 64 (0.02%)
realworld.run.windows.x86.checked.mch 35,963 3 35,960 27 (0.08%) 27 (0.08%)
2,290,755 838,165 1,452,590 808 (0.04%) 808 (0.04%)

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: 184751928 (overridden on cmd)
Total bytes of diff: 184751928 (overridden on cmd)
Total bytes of delta: 0 (0.00 % of base)
    relative diff is a regression.

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).