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author | Meador Inge <meadori@codesourcery.com> | 2012-11-27 05:57:54 +0000 |
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committer | Meador Inge <meadori@codesourcery.com> | 2012-11-27 05:57:54 +0000 |
commit | 69ea027e045f359b48bd436d530fc443a7cbb5c9 (patch) | |
tree | ee37a890e7fa5c16adb9d2aae0153961e7e69520 /test/Transforms/InstCombine | |
parent | df22702db0b74c14782e00e36e9e9c5df56182b6 (diff) | |
download | external_llvm-69ea027e045f359b48bd436d530fc443a7cbb5c9.zip external_llvm-69ea027e045f359b48bd436d530fc443a7cbb5c9.tar.gz external_llvm-69ea027e045f359b48bd436d530fc443a7cbb5c9.tar.bz2 |
instcombine: Migrate sprintf optimizations
This patch migrates the sprintf optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168677 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine')
-rw-r--r-- | test/Transforms/InstCombine/2010-05-30-memcpy-Struct.ll | 20 | ||||
-rw-r--r-- | test/Transforms/InstCombine/sprintf-1.ll | 80 |
2 files changed, 100 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2010-05-30-memcpy-Struct.ll b/test/Transforms/InstCombine/2010-05-30-memcpy-Struct.ll new file mode 100644 index 0000000..b75fa5a --- /dev/null +++ b/test/Transforms/InstCombine/2010-05-30-memcpy-Struct.ll @@ -0,0 +1,20 @@ +; RUN: opt -instcombine %s -S -o - | FileCheck %s +; PR7265 + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-unknown-linux-gnu" + +%union.anon = type { i32, [4 x i8] } + +@.str = private constant [3 x i8] c"%s\00" + +define void @CopyEventArg(%union.anon* %ev) nounwind { +entry: + %call = call i32 (i8*, i8*, ...)* @sprintf(i8* undef, i8* getelementptr inbounds ([3 x i8]* @.str, i64 0, i64 0), %union.anon* %ev) nounwind +; CHECK: bitcast %union.anon* %ev to i8* +; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64 + ret void +} + +declare i32 @sprintf(i8*, i8*, ...) + diff --git a/test/Transforms/InstCombine/sprintf-1.ll b/test/Transforms/InstCombine/sprintf-1.ll new file mode 100644 index 0000000..1b298b8 --- /dev/null +++ b/test/Transforms/InstCombine/sprintf-1.ll @@ -0,0 +1,80 @@ +; Test that the sprintf library call simplifier works correctly. +; +; RUN: opt < %s -instcombine -S | FileCheck %s +; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=IPRINTF + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" + +@hello_world = constant [13 x i8] c"hello world\0A\00" +@h = constant [2 x i8] c"h\00" +@percent_c = constant [3 x i8] c"%c\00" +@percent_d = constant [3 x i8] c"%d\00" +@percent_f = constant [3 x i8] c"%f\00" +@percent_s = constant [3 x i8] c"%s\00" + +declare i32 @sprintf(i8*, i8*, ...) + +; Check sprintf(dst, fmt) -> llvm.memcpy(str, fmt, strlen(fmt) + 1, 1). + +define void @test_simplify1(i8* %dst) { +; CHECK: @test_simplify1 + %fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt) +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0), i32 13, i32 1, i1 false) + ret void +; CHECK-NEXT: ret void +} + +; Check sprintf(dst, "%c", chr) -> *(i8*)dst = chr; *((i8*)dst + 1) = 0. + +define void @test_simplify2(i8* %dst) { +; CHECK: @test_simplify2 + %fmt = getelementptr [3 x i8]* @percent_c, i32 0, i32 0 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i8 104) +; CHECK-NEXT: store i8 104, i8* %dst, align 1 +; CHECK-NEXT: [[NUL:%[a-z0-9]+]] = getelementptr i8* %dst, i32 1 +; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1 + ret void +; CHECK-NEXT: ret void +} + +; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1). + +define void @test_simplify3(i8* %dst, i8* %str) { +; CHECK: @test_simplify3 + %fmt = getelementptr [3 x i8]* @percent_s, i32 0, i32 0 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i8* %str) +; CHECK-NEXT: [[STRLEN:%[a-z0-9]+]] = call i32 @strlen(i8* %str) +; CHECK-NEXT: [[LENINC:%[a-z0-9]+]] = add i32 [[STRLEN]], 1 +; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dst, i8* %str, i32 [[LENINC]], i32 1, i1 false) + ret void +; CHECK-NEXT: ret void +} + +; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating. + +define void @test_simplify4(i8* %dst) { +; CHECK-IPRINTF: @test_simplify4 + %fmt = getelementptr [3 x i8]* @percent_d, i32 0, i32 0 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, i32 187) +; CHECK-NEXT-IPRINTF: call i32 (i8*, i8*, ...)* @siprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8]* @percent_d, i32 0, i32 0), i32 187) + ret void +; CHECK-NEXT-IPRINTF: ret void +} + +define void @test_no_simplify1(i8* %dst) { +; CHECK-IPRINTF: @test_no_simplify1 + %fmt = getelementptr [3 x i8]* @percent_f, i32 0, i32 0 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double 1.87) +; CHECK-NEXT-IPRINTF: call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* getelementptr inbounds ([3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00) + ret void +; CHECK-NEXT-IPRINTF: ret void +} + +define void @test_no_simplify2(i8* %dst, i8* %fmt, double %d) { +; CHECK: @test_no_simplify2 + call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double %d) +; CHECK-NEXT: call i32 (i8*, i8*, ...)* @sprintf(i8* %dst, i8* %fmt, double %d) + ret void +; CHECK-NEXT: ret void +} |