forked from OSchip/llvm-project
106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
// REQUIRES: x86-registered-target
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// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -O0 -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -O0 -emit-llvm %s -o - | FileCheck %s
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int test1(int cond) {
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// CHECK-LABEL: define i32 @test1(
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// CHECK: callbr void asm sideeffect
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// CHECK: to label %asm.fallthrough [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough:
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asm volatile goto("testl %0, %0; jne %l1;" :: "r"(cond)::label_true, loop);
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asm volatile goto("testl %0, %0; jne %l2;" :: "r"(cond)::label_true, loop);
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// CHECK: callbr void asm sideeffect
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// CHECK: to label %asm.fallthrough1 [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough1:
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return 0;
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loop:
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return 0;
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label_true:
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return 1;
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}
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int test2(int cond) {
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// CHECK-LABEL: define i32 @test2(
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// CHECK: callbr i32 asm sideeffect
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// CHECK: to label %asm.fallthrough [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough:
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asm volatile goto("testl %0, %0; jne %l2;" : "=r"(cond) : "r"(cond) :: label_true, loop);
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asm volatile goto("testl %0, %0; jne %l3;" : "=r"(cond) : "r"(cond) :: label_true, loop);
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// CHECK: callbr i32 asm sideeffect
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// CHECK: to label %asm.fallthrough1 [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough1:
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return 0;
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loop:
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return 0;
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label_true:
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return 1;
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}
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int test3(int out1, int out2) {
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// CHECK-LABEL: define i32 @test3(
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// CHECK: callbr { i32, i32 } asm sideeffect
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// CHECK: to label %asm.fallthrough [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough:
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asm volatile goto("testl %0, %0; jne %l3;" : "=r"(out1), "=r"(out2) : "r"(out1) :: label_true, loop);
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asm volatile goto("testl %0, %0; jne %l4;" : "=r"(out1), "=r"(out2) : "r"(out1) :: label_true, loop);
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// CHECK: callbr { i32, i32 } asm sideeffect
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// CHECK: to label %asm.fallthrough2 [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough2:
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return 0;
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loop:
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return 0;
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label_true:
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return 1;
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}
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int test4(int out1, int out2) {
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// CHECK-LABEL: define i32 @test4(
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// CHECK: callbr { i32, i32 } asm sideeffect "jne ${3:l}", "={si},={di},r,X,X,0,1
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// CHECK: to label %asm.fallthrough [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough:
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if (out1 < out2)
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asm volatile goto("jne %l3" : "+S"(out1), "+D"(out2) : "r"(out1) :: label_true, loop);
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else
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asm volatile goto("jne %l5" : "+S"(out1), "+D"(out2) : "r"(out1), "r"(out2) :: label_true, loop);
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// CHECK: callbr { i32, i32 } asm sideeffect "jne ${5:l}", "={si},={di},r,r,X,X,0,1
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// CHECK: to label %asm.fallthrough2 [label %label_true, label %loop]
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// CHECK-LABEL: asm.fallthrough2:
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return out1 + out2;
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loop:
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return -1;
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label_true:
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return -2;
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}
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int test5(int addr, int size, int limit) {
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// CHECK-LABEL: define i32 @test5(
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// CHECK: callbr i32 asm "add $1,$0 ; jc ${3:l} ; cmp $2,$0 ; ja ${3:l} ; ", "=r,imr,imr,X,0
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// CHECK: to label %asm.fallthrough [label %t_err]
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// CHECK-LABEL: asm.fallthrough:
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asm goto(
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"add %1,%0 ; "
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"jc %l[t_err] ; "
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"cmp %2,%0 ; "
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"ja %l[t_err] ; "
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: "+r" (addr)
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: "g" (size), "g" (limit)
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: : t_err);
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return 0;
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t_err:
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return 1;
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}
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int test6(int out1) {
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// CHECK-LABEL: define i32 @test6(
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// CHECK: callbr i32 asm sideeffect "testl $0, $0; testl $1, $1; jne ${2:l}", "={si},r,X,X,0,{{.*}} i8* blockaddress(@test6, %label_true), i8* blockaddress(@test6, %landing)
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// CHECK: to label %asm.fallthrough [label %label_true, label %landing]
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// CHECK-LABEL: asm.fallthrough:
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// CHECK-LABEL: landing:
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int out2 = 42;
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asm volatile goto("testl %0, %0; testl %1, %1; jne %l2" : "+S"(out2) : "r"(out1) :: label_true, landing);
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landing:
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return out1 + out2;
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label_true:
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return -2;
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}
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