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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=bdver1 | FileCheck %s3 4; clang -Oz -c test1.cpp -emit-llvm -S -o5; Verify that we generate shld insruction when we are optimizing for size,6; even for X86_64 processors that are known to have poor latency double7; precision shift instructions.8; uint64_t lshift10(uint64_t a, uint64_t b)9; {10; return (a << 10) | (b >> 54);11; }12 13; Function Attrs: minsize nounwind readnone uwtable14define i64 @_Z8lshift10mm(i64 %a, i64 %b) #0 {15; CHECK-LABEL: _Z8lshift10mm:16; CHECK: # %bb.0: # %entry17; CHECK-NEXT: movq %rdi, %rax18; CHECK-NEXT: shldq $10, %rsi, %rax19; CHECK-NEXT: retq20entry:21 %shl = shl i64 %a, 1022 %shr = lshr i64 %b, 5423 %or = or i64 %shr, %shl24 ret i64 %or25}26 27attributes #0 = { minsize nounwind readnone uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }28 29 30; clang -Os -c test2.cpp -emit-llvm -S31; Verify that we generate shld insruction when we are optimizing for size,32; even for X86_64 processors that are known to have poor latency double33; precision shift instructions.34; uint64_t lshift11(uint64_t a, uint64_t b)35; {36; return (a << 11) | (b >> 53);37; }38 39; Function Attrs: nounwind optsize readnone uwtable40define i64 @_Z8lshift11mm(i64 %a, i64 %b) #1 {41; CHECK-LABEL: _Z8lshift11mm:42; CHECK: # %bb.0: # %entry43; CHECK-NEXT: movq %rdi, %rax44; CHECK-NEXT: shldq $11, %rsi, %rax45; CHECK-NEXT: retq46entry:47 %shl = shl i64 %a, 1148 %shr = lshr i64 %b, 5349 %or = or i64 %shr, %shl50 ret i64 %or51}52 53define i64 @_Z8lshift11mm_pgso(i64 %a, i64 %b) !prof !14 {54; CHECK-LABEL: _Z8lshift11mm_pgso:55; CHECK: # %bb.0: # %entry56; CHECK-NEXT: movq %rdi, %rax57; CHECK-NEXT: shldq $11, %rsi, %rax58; CHECK-NEXT: retq59entry:60 %shl = shl i64 %a, 1161 %shr = lshr i64 %b, 5362 %or = or i64 %shr, %shl63 ret i64 %or64}65 66attributes #1 = { nounwind optsize readnone uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }67 68; clang -O2 -c test2.cpp -emit-llvm -S69; Verify that we do not generate shld insruction when we are not optimizing70; for size for X86_64 processors that are known to have poor latency double71; precision shift instructions.72; uint64_t lshift12(uint64_t a, uint64_t b)73; {74; return (a << 12) | (b >> 52);75; }76 77; Function Attrs: nounwind optsize readnone uwtable78define i64 @_Z8lshift12mm(i64 %a, i64 %b) #2 {79; CHECK-LABEL: _Z8lshift12mm:80; CHECK: # %bb.0: # %entry81; CHECK-NEXT: shrq $52, %rsi82; CHECK-NEXT: shlq $12, %rdi83; CHECK-NEXT: leaq (%rdi,%rsi), %rax84; CHECK-NEXT: retq85entry:86 %shl = shl i64 %a, 1287 %shr = lshr i64 %b, 5288 %or = or i64 %shr, %shl89 ret i64 %or90}91 92attributes #2= { nounwind readnone uwtable "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "use-soft-float"="false" }93 94!llvm.module.flags = !{!0}95!0 = !{i32 1, !"ProfileSummary", !1}96!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}97!2 = !{!"ProfileFormat", !"InstrProf"}98!3 = !{!"TotalCount", i64 10000}99!4 = !{!"MaxCount", i64 10}100!5 = !{!"MaxInternalCount", i64 1}101!6 = !{!"MaxFunctionCount", i64 1000}102!7 = !{!"NumCounts", i64 3}103!8 = !{!"NumFunctions", i64 3}104!9 = !{!"DetailedSummary", !10}105!10 = !{!11, !12, !13}106!11 = !{i32 10000, i64 100, i32 1}107!12 = !{i32 999000, i64 100, i32 1}108!13 = !{i32 999999, i64 1, i32 2}109!14 = !{!"function_entry_count", i64 0}110